GB867763A - Improvements in and relating to insulated conductors - Google Patents

Improvements in and relating to insulated conductors

Info

Publication number
GB867763A
GB867763A GB7091/60A GB709160A GB867763A GB 867763 A GB867763 A GB 867763A GB 7091/60 A GB7091/60 A GB 7091/60A GB 709160 A GB709160 A GB 709160A GB 867763 A GB867763 A GB 867763A
Authority
GB
United Kingdom
Prior art keywords
insulation
mould
binder
conductor
tape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7091/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB867763A publication Critical patent/GB867763A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

867,763. Moulding insulation around conductors. GENERAL ELECTRIC CO. Feb. 29, 1960 [March 4, 1959], No. 7091/60. Class 87(2). Insulation including a thermosetting or thermoplastic binder is moulded around a conductor by enclosing the conductor and insulation in a pressure - constructable mould, enclosing the mould in a heat shrinkable material, gradually heating said material to cause it to constrict while the insulation binder is in a fluid state, and thereafter causing said binder to solidify while the insulation is constricted. A stator bar having conductor strands 4 insulated at 4a and comprising a straight portion to be fitted into the slot of an armature and curved end portions is wound with layers of insulating tape 5 coated and impregnated with a binding thermosetting resin and the straight section is then enclosed in a mould comprising opposed angle pieces 6, 7. The mould is surrounded with a heatshrinkable tape 12 and placed in a tank which is evacuated and heated, sections 6a, 7a determining the width of the insulation. Hydraulic pressure is then applied to the mould by introducing molten asphalt to the tank at aout 150‹C. and is maintained until the resin is cured. A thermoplastic binder which may comprise the pressure fluid may alternatively be used and with thermosetting binders a tape may be provided to prevent contamination of the insulation by the pressure fluid.
GB7091/60A 1959-03-04 1960-02-29 Improvements in and relating to insulated conductors Expired GB867763A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US867763XA 1959-03-04 1959-03-04
US797159A US3050787A (en) 1959-03-04 1959-03-04 Method for making armature conductor bar

Publications (1)

Publication Number Publication Date
GB867763A true GB867763A (en) 1961-05-10

Family

ID=26775146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7091/60A Expired GB867763A (en) 1959-03-04 1960-02-29 Improvements in and relating to insulated conductors

Country Status (2)

Country Link
US (1) US3050787A (en)
GB (1) GB867763A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276102A (en) * 1979-09-04 1981-06-30 General Electric Company Method for compacting transposed cable strands
US4321426A (en) * 1978-06-09 1982-03-23 General Electric Company Bonded transposed transformer winding cable strands having improved short circuit withstand

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275734A (en) * 1961-08-22 1966-09-27 Pittsburgh Plate Glass Co Method of casting sheet-like articles
US3311514A (en) * 1962-09-07 1967-03-28 Hitachi Ltd Method for manufacturing electrically insulated coils
US3331907A (en) * 1966-08-29 1967-07-18 Samson G Salzinger Resin curing method
AT277378B (en) * 1967-12-16 1969-12-29 Siemens Ag Process and device for the impregnation and dimensionally correct curing of winding bars, coils or half-coils of electrical machines
JP3609783B2 (en) * 2002-01-31 2005-01-12 株式会社東芝 Insulating coil manufacturing method for rotating electrical machine
US7026554B2 (en) * 2003-10-02 2006-04-11 General Electric Company Stator bar with exruded groundwall insulation
SE0401755D0 (en) * 2004-07-05 2004-07-05 Alstom Technology Ltd Method for mounting rotor windings with consolidated coils
EP1821389A1 (en) * 2006-01-24 2007-08-22 ALSTOM Technology Ltd Insulating cover for a bar to bar connection of a stator winding
CN104319018B (en) * 2014-11-10 2016-09-21 哈尔滨电机厂有限责任公司 Generator stator bar wire manufacturing method
US11605994B2 (en) 2021-05-24 2023-03-14 The Timken Company Winding insulation system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377517A (en) * 1919-10-23 1921-05-10 John Stogdell Stokes Method of and apparatus for molding plastic articles
US2235906A (en) * 1936-05-07 1941-03-25 Skoning Corp Apparatus for molding
US2406843A (en) * 1943-04-19 1946-09-03 Brunswick Balke Collender Co Process for molding materials under heat and pressure
US2581862A (en) * 1944-09-14 1952-01-08 John S Johnson Insulation
US2444903A (en) * 1945-03-22 1948-07-06 Goodrich Co B F Process of vulcanizing
US2656290A (en) * 1948-10-28 1953-10-20 Westinghouse Electric Corp Processes for producing electrical coils insulated with mica and synthetic resins and the products thereof
US2601243A (en) * 1949-10-20 1952-06-24 Westinghouse Electric Corp Process for producing consolidated insulation on high-voltage coils
US2675421A (en) * 1950-09-15 1954-04-13 Dow Corning Insulated electric coil and method of making the same
CA593172A (en) * 1956-04-13 1960-02-23 General Electric Company Fabrication of electrical windings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321426A (en) * 1978-06-09 1982-03-23 General Electric Company Bonded transposed transformer winding cable strands having improved short circuit withstand
US4276102A (en) * 1979-09-04 1981-06-30 General Electric Company Method for compacting transposed cable strands

Also Published As

Publication number Publication date
US3050787A (en) 1962-08-28

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